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New A15 niobium3(aluminium, germanium) tape prepared from sigma-phase powder.

Author(s) : TACHIKAWA K., SAKINADA K., KOBAYASHI M.

Type of article: Article

Summary

The tape has been prepared by a reaction between sigma-phase niobium2(aluminium, germanium) and niobium powders. Fabrication of the tape using a niobium sheath was quite successful. The superconducting properties and structure of the newly prepared niobium3(aluminium, germanium) tape were studied. Finer sigma-phase and niobium starting powders yield a pronounced improvement in critical-current density at magnetic fields from 10 to 23 T. The addition of magnesium-oxide powder is effective for enhancing critical-current density and reducing the peak effect.

Details

  • Original title: New A15 niobium3(aluminium, germanium) tape prepared from sigma-phase powder.
  • Record ID : 1994-2098
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 11
  • Publication date: 1993/11

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